Senior Application Developer

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Krakow, Poland

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Application Security

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Automotive Industry

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25/05/2026

Req. VR-122600

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Project description

We are seeking a Senior Application Developer with extensive experience in Go (Golang), Java, virtualized environments, and containerization technologies. The ideal candidate will bring a strong security-first mindset, proven experience working with certificates and encryption mechanisms, and the ability to design and deliver scalable, secure, and high-performance applications in modern cloud-native environments.
As a senior member of the team, you will play a key role in system architecture, technical decision-making, mentoring junior developers, and ensuring best practices in application security and reliability.

Responsibilities
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Design, develop, and maintain secure, scalable backend applications using Go (Golang) and Java

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Lead the development of containerized microservices using Docker and Kubernetes

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Build and optimize applications running on virtualized platforms

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Implement and manage application-level security, including authentication, authorization, and secure communication

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Work extensively with TLS, SSL certificates, keystores, truststores, and certificate lifecycle management

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Ensure secure handling of secrets, keys, and credentials

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Collaborate with DevOps, Cloud, and Security teams to integrate solutions into CI/CD pipelines

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Conduct code reviews, mentor junior developers, and promote coding best practices

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Troubleshoot complex production issues in distributed systems

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Contribute to architectural designs, technical roadmaps, and security reviews

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Ensure compliance with security and regulatory standards where applicable

Skills

Must have

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Required Skills & Experience

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Core Technical Skills

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Strong hands-on experience with Go (Golang) and Java (5+ years total development experience preferred)

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Deep experience with containerization and orchestration:

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Docker / Podman

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Kubernetes / OpenShift

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Solid understanding of virtualization technologies (VMware, KVM, Hyper-V)

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Proven experience developing RESTful APIs and microservices architectures

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Strong knowledge of Linux/Unix-based systems

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Experience with Git and modern CI/CD pipelines

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Security & Certificate Management

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Strong experience with application security principles

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Hands-on experience with:

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TLS/SSL certificates

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PKI, X.509 certificates

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Keystores and truststores (e.g., JKS, PKCS12)

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Understanding of secure communication protocols and encryption

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Experience implementing authentication and authorization mechanisms (OAuth2, JWT, mTLS)

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Familiarity with secure secret management tools (e.g., vault-based systems)

Nice to have

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Experience with major cloud platforms (AWS, Azure, or GCP)

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Knowledge of Infrastructure as Code tools (Terraform, Helm)

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Familiarity with security standards and frameworks (OWASP, NIST)

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Experience with observability tools (Prometheus, Grafana, ELK)

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Background in distributed systems and event-driven architectures

Other
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Languages

English: C1 Advanced

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Seniority

Senior

Luxoft Benefits*
  • Relocation options **
  • Experience in an international environment
  • Cross-cultural experience
  • Feedback culture
  • Regular appraisals
  • Annual holiday - 20 or 26 days. The duration of the leave depends on the overall seniority
  • Occasional leave - 1 or 2 days/ depending on the circumstances
  • Child care leave - 2 days or 16 hours per year
  • Absence due to force majeure - 2 days or 16 hours per year
  • Maternity Leave - 20 weeks
  • Parental Leave - 41 weeks
  • Paternity Leave - 14 days
  • Expert-led tech courses covering basic to advanced topics
  • Internal instructor-led soft skills courses
  • Comprehensive in-house self-learning resources for both soft and hard skills
  • Access to external self-learning libraries like ProQuest eBook and Udemy for Business
  • Cloud Programs: MS Cloud Academy, AWS Partner Academy, Google Cloud Academy
  • Custom Learning Programs: upskilling, reskilling, technical mentorship
  • Leadership Programs for Managers
  • Multisport card
  • Possibility to order Multisport card at the corporate rate for family members
  • LuxGood Program: wellbeing seminars, contests, relaxation sessions, yoga sessions, etc.
  • One Team Program: Buddy for each New Joiner; seminars, meeting and workplace space to support integration with local community and culture; “Hire me” workshops for partners
  • Preferential banking offer
  • Preferential car leasing offer
  • Cafeteria program discounts for shops, cinema tickets, holiday offers
  • Luxoft Social Benefit Fund: sport and recreation benefits, the possibility to receive financial support
  • Private Healthcare Insurance with unlimited access to specialists
  • Full dental support
  • Travel Insurance
  • Possibility to add private healthcare coverage for family members at the corporate rate
  • Life insurance at the corporate rate for employees and family members, including payment of the basic package for the employee by the employer
  • Reimbursement for corrective glasses
  • Many fun social activities organized by the Luxoft team offline in your city
  • Online entertainment events for whole company and local team events
  • A workplace where you’re treated with respect within a multicultural team
  • Rotation between projects and accounts
  • New career opportunities

Self-Learning Library

CSR Projects

*The acquisition of rights to the above benefits depends on the form of cooperation. Benefits apply to those employed under a contract of employment.

**Please note that relocation is not available for all open positions. At Luxoft Poland it is possible to work remotely only from the territory of Poland.

***Options offered by the Polish government.

Krakow, Poland

Req. VR-122600

Application Security

Automotive Industry

25/05/2026

Req. VR-122600

Apply for Senior Application Developer in Krakow

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